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Hyperbola :
A hyperbola is the set of all points in a plane such that the absolute value of the difference of the distances from two fixed points, called the foci, is constant.
\Given :
\A hyperbola at the right has foci at (4, 0) and (- 2, 0).
\Asymptotes slopes = ± 4.
\The standard form of the equation of a hyperbola with center (where a and b are not equals to 0) is
(Transverse axis is horizontal) or
(Transverse axis is vertical).
The vertices and foci are, respectively a and c units from the center (h, k) and the relation between a, b and c is .
Since the y - coordinate is constant in the foci, this is a horizontal hyperbola.
\The center of the hyperbola lies at the midpoint of its vertices or foci.
\So, the center =
=
= (1, 0).
To find the value of c, find the distance between the center (1, 0) and a focus (- 2, 0).
\This distance is 3, so .
From the given data, Asymptotes slopes = = ± 4.(Because, this is a horizontal hyperbola).
So, .
Substitute the values of and
in
.
.
Substitute the value in
.
.
Substitute the values of ,
,
= (1, 0) and in
.
.
An equation of this hyperbola is .